This is our pho place. It's almost a second home, although we get their take-out almost exclusively. We have an extensive garden that demands a lot of hard work, so on busy work days, we get their take-out to last our weekend. I think you might get a better response from the very busy tireless owners if you caught their eye and spoke to them. All I did was donate a couple of sunflowers once and I've got a Vietnamese auntie for life. It's a small thing to touch someone's heart and they certainly have touched mine with nourishing, extremely healthy soup. I also turn to this amazing broth when I'm feeling like I might be coming down with something. Often that's all I need to turn something from a cold or flu into a one-day thing.
One bonus for us at least, the sturdy plastic take-out tubs make amazing small greenhouses for seeds started early. ;o)